Home / 30,198.55-45,251.64-12,658.81

Finding the Fourth Proportional to 30,198.55, 45,251.64 and 12,658.81

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Solution

The fourth proportional to 30,198.55, 45,251.64 and 12,658.81 is: 18,968.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,198.55 : 45,251.64 = 12,658.81 : x
  2. Step 2: Convert to fraction form
    30,198.55/45,251.64 = 12,658.81/x
  3. Step 3: Cross multiply
    30,198.55x = 45,251.64 × 12,658.81
  4. Step 4: Simplify right side
    30,198.55x = 572,831,912.95
  5. Step 5: Solve for x
    x = 572,831,912.95/30,198.55
  6. Step 6: Final answer
    x = 18,968.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.